Combination
Melting and Dip-Out Furnaces
Models DO-300, DO-600, DO-1000, DO-1500 &
DO-2000
Larger capacities available for cast iron
pots in stationary
or hydraulically tilted styles - gas fired.
Aluminum: up to 7,500 lbs.
Zinc or Kirksite: up to 20,000 lbs.
Lead: up to 30,000 lbs.
SPECIFICATIONS AND FEATURES
MIFCO now has 5 different sizes of our
Dip-Out furnaces to offer, available in 2 configurations to
accommodate various needs. The MIFCO Dip-Out furnaces use a
high velocity burner that is more efficient, provides more
even heating of the firing chamber and crucible, and is
designed for this application. All of these features will
result in significant savings in gas consumption and greatly
increased crucible life. Each model includes a control
instrument with programming capabilities for overnight idling
of the furnace. The safety system is equipped with a self
diagnostic display that confirms the integrity of all system
components prior to start-up. In the event of a system
shut-down, the diagnostic package will help determine the
cause of the shut-down. All controls are housed in a Nema 1
rated enclosure with fused disconnect.
Burner System
The burner system is a high velocity type
burner controlled by the microprocessor based control system.
Once the initial adjustments are made, there are no valves to
turn because the gas-air proportioning mixer is automatic.
There are two types of burner systems offered; a standard F.M.
approved proportioning burner system or one with an optional
I.R.I. approved valve train.
Many insurance companies are requiring that
burner systems over 150,000 BTU/HR be equipped with an I.R.I.
(Industrial Risk Insurance) approved valve train. This
optional valve train is available on all Dip-Out furnaces and
our larger Tilting Melters (T-600 and larger). The main
components are a gas regulator, double gas cock shut-off
valves, double gas valve actuators, a block and vent gas
valve, high/low gas pressure switch, air switch, and a
sophisticated flame supervision system to control all of these
components. There are high and low fire purges and proof of
purge prior to ignition of the main flame. We believe that
this system is the best available on the market today. The
I.R.I. approved gas train will provide safe start-up and
operation for both your employees and your plant.
Crucible
The crucible is supported on a crucible
rest that sits on the hard brick bottom. The furnace has a
side drain in case of a crucible leak or break. The crucible
is sealed at the top so that no flame comes out the top to
contaminate the melt. For operator comfort, all exhaust exits
at the back of the furnace.
Control System
A free standing NEMA1 control panel, to
house the digital control instruments and the flame safeguard
controls, is furnished as standard equipment. The standard
controls are digital microprocessor based controls that can be
configured in either Centigrade or Fahrenheit. The control
instrument furnished also features Ramp/Soak Programming so
that idle programs can be entered for even greater gas
savings. The ultra-violet flame safeguard system monitors the
spark ignited pilot flame at the point where it intersects the
main flame. When the flame scanner detects a pilot flame, the
main gas valve is opened and the main flame comes on.
Furnace Lining
A new concept in linings has been
incorporated into the MIFCO dip out furnace. The firing
chamber has a high alumina hard brick lining where flame
abrasion is the highest and ceramic fiber lining in the rest
of the chamber for fast heat up and lower heat loss. These
linings are backed up by a high temperature castable cement. A
new concept in the use of fiber linings has also been used to
prevent the cracking that occurred in vacuum formed fiber
linings used in earlier fiber lined furnaces.
Lid Cover
A swing away cover, lined with fiber
insulation, is standard equipment on all DO models. This cover
aids in saving fuel and should be kept in place at all times,
except when ladling. An optional pneumatic lid lift is also
available for these units.
Top Plate
The "Ladle Banger"
top is heavy 1/2" plate with a stainless steel drip shield
that extends down inside the crucible so that spilled metal
will not run back into the firing chamber. The top does not
touch the crucible so that the shock of ladle banging is not
transmitted to the crucible or inner lining.
Thermocouple
The Thermocouple
Protection Tube is made of silicon carbide material to provide
excellent temperature conductivity for quick response to
changes. Special surface treatment assures maximum resistance
to metal penetration for the protection of the contained
thermocouple.
Melt
Times
Melting times for aluminum, with the cover closed, will
average 3 hours for the DO-600 and 3 1/2 hours for the
DO-1000. This time includes adding metal to the melt to bring
the total amount of metal melted up to the full capacity of
the furnace. Charge Rate of the DO-600 is 200 lbs. per hour
and the DO-1000 Charge Rate is 300 to 350 lbs. per hour.
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Combination Melting and Dip-Out
SPECIFICATIONS |
FURNACE
MODEL |
CRUCIBLE
SIZE |
ALUMINUM
CAPACITY |
BRASS
CAPACITY |
APPROXIMATE
DIMENSIONS |
GAS PRESSURE |
GAS LINE |
GAS VALVE SIZE |
GAS RATING IN BTU |
APPROX.. SHIPPING
WEIGHT |
|
A |
B |
C |
D |
E |
|
DO-300 |
300 |
300 lbs |
900 lbs |
36" |
52" |
32" |
50" |
52" |
14" |
1 1/4" |
1 1/4" |
650,000 |
2,200 lbs |
|
DO-600 |
600 |
600 lbs |
1,800 lbs |
51" |
72" |
38' |
55" |
72" |
22" |
1 1/4" |
1 1/4" |
1,400,000 |
3,225 lbs |
|
D0-1000 |
1000 |
1,000 lbs |
3,000 lbs |
56" |
78" |
43" |
62" |
78" |
22" |
2" |
2" |
1,800,000 |
4,366 lbs |
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DO-1500 |
4150 |
1,500 lbs |
4,500 lbs |
60" |
88" |
43" |
62" |
88" |
2 lbs |
2" |
2" |
2,500,000 |
5,300 lbs |
|
DO-2000 |
42000 |
2,000 lbs |
6,000 lbs |
66
1/2" |
98" |
43" |
63" |
98" |
2 lbs |
2 1/2" |
2 1/2" |
3,000,000 |
5,700 lbs |
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Dimensions are approximate |
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